An integrated digital controller for DC-DC switching converter with dual-band switching

Author

Martin Yeung-Kei Chui ; Wing-Hung Ki ; Chi-Ying Tsui

Author_Institution

Dept. of Electr. & Electron. Eng., Hong Kong Univ. of Sci. & Technol., China

fYear

2003

fDate

12-14 June 2003

Firstpage

45

Lastpage

48

Abstract

A 0.6 /spl mu/m CMOS integrated digital PID controller for a buck converter is presented. It consists of: (1) a VCO driving a counter to serve as an ADC; (2) a PID compensator that employs variable integration times for enhancing accuracy and stability, and (3) a dual-band switching PWM generator with a modified tapped delay line for better output resolution and area efficiency. The converter switches at 1 MHz, while the tracking time is 50 /spl mu/s for a step change of 1 V.

Keywords

CMOS digital integrated circuits; DC-DC power convertors; PWM power convertors; controllers; switching convertors; three-term control; voltage-controlled oscillators; 0.6 micron; 1 MHz; 1 V; 50 mus; CMOS integrated digital PID controller; DC-DC switching converter; PID compensator; PWM generator; VCO; buck converter; converter switches; dual-band switching; integrated digital controller; Buck converters; Counting circuits; Delay lines; Digital control; Dual band; Pulse width modulation; Stability; Switching converters; Three-term control; Voltage-controlled oscillators;

fLanguage

English

Publisher

ieee

Conference_Titel

VLSI Circuits, 2003. Digest of Technical Papers. 2003 Symposium on

Conference_Location

Kyoto, Japan

Print_ISBN

4-89114-034-8

Type

conf

DOI

10.1109/VLSIC.2003.1221157

Filename

1221157